Fix VMStack::getClosestUserClassLoader to ignore NULL

NULL is the bootstrap loader, getClosestUserClassLoader was incorrectly
not ignoring it.

Change-Id: I8b18bb01d3a5ae8b9f34ccbbfa5fc25750d91716
1 file changed
tree: b70fb71bae37e2297e7f20de733e33da44a583a4
  1. Android.mk
  2. build/
  3. jdwpspy/
  4. src/
  5. test/
  6. tools/